ostlund



2 Sheets-Sheet 1 (No Model.)

0. USTLUND. COOKING STOVE.

Patented Ja11. 16

2 Sheets-Sheet 2.

(No Model.)

0. USTLUND.

COOKING STOVEL.

Patented Jan. 16,

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N. PETERS. Phahw-Lilhognpher. Washington. D, c.

UNITED STATES f PATENT OFFICE.

CARL ()STLUND, OF S TOOKHOLM, SIVEDEN.

COQKlNG-STOVE.

SPEGIFICATION forming part of Letters Patent No. 270,690, dated January 16, 183.

Application filed February 523, 1882. (No model.)

To all whom it may concern:

Be it known that I, CARL OsrLUNI), a citizen of Sweden, residingat Stockholm, Sweden,

apparatus for heating with petroleum or the therein.

like, by which a great degree of heat can be obtained very cheaply and without danger from explosions. Thisapparatusconsists mainly of four parts, namely: first, the vessel a, Fig. 1, for containing the petroleum, which is united by a tube with, second, a low vessel, 11, for collecting any sediment or refuse from the petroleum, 00 being a faucet near the bottom of this vessel for drawing off this sediment or refuse; third, the pipe-coils c; and, fourth, the cap (I, which expedites the complete consumption of the petroleum-gas. The two first-mentioned vessels can also be replaced or substituted by a single vessel, as shown in Figures 2, 3, and 4.

In the accompanying drawings, Fig. 1 represents such an apparatus with separated oil case or vessel and a burning-vessel. Fig. 2 is an apparatus with only one vessel in side elevation; Fig. 3, a plan view of the same, and Fig. 4. a vertical section. Fig. 5 shows a modilied construction for attachment of the fillingfaucet; Fig. 6, an enlarged partial plan view, showing the cap applied to the vertical spirals of the tube and Fig. 7, a detached vertical section through the cap and these vertical coils or spirals.

The oil for burning is filled into the vessel A through the inlet-opening a. It is, however, necessary that in this vessel there be suliicient room in the apparatus for the air to be pumped into it, which will be compressed therein, and serves to force the petroleum up into the pipecoils,'according to the quantity of oil burned For this purpose I make the small wall b behind theopeniug a. When sufficient petroleum has been-poured into the vessel to reach the lower edgeof the wall I), then, if the filling is continued, the air above the surface of the oil in the vessel will be compressed, and prevents there by further filling. However, this air-space can be producedin difierent ways-as, for example, as shown in Fig. 5. After the filling has been completed the opening a is securely screwed up.

7 In using the apparatus the pipe-coils B are, as a preparatory step. first warmed by means ofan alcohol-flame. The air is then blown into the oil-receptacle through the tube 0, or is pressed into it by means of a rubber bulb ora small pump. In the construction shown in Fig. 1 the petroleum is forced up in the tubecoils by its own weight from the higher-placed vessel a. By the pressure produced thereby the petroleum is driven out of the vessel into the warmed pipe-coils, is there gasified, and passes through the holes in the tubes (the apparatus represented in the drawings has only one, it, of these holes) in the form of burning gas. Mixed with the surrounding air, the outflowing gas comes in contact with the parts of the tubes immediately above the outlet h, by which its rapidity is diminished, so thatit can become ignited by the heating-flame. Then the flame of gas is deflected by the under surface of the top plate,f, of the cap d and against the part g of this cap, and it then passes out through the annular opening i, between the plate and cap, and produces herea draft,whereby the surrounding air flows into the cap and expedites the burningof theoil-gas,sothatthis is donefar more perfectly than by the burning of alcohol in an ordinary alcohol-lamp. This cap is an inverted flaring cup, so that when applied to the top of the coils, as shown, it is entirely open at the bottom, entirely closedat its sides, and its top is flat and provided with openings around a central disk, which is integral with the cap, these openings forming almost a complete'annular passagefortheflame, as shown. This cap is cast all in one piece. This cap is removably secured to the coils of the tube in any suitable way to hold it in its proper position but a simple and efficient mode is by means of a short iron rod, It, held by a nut, l, to the cap, the lower end of such rod passing down between two coils, and a bend or head on such end holding the cap to the coils, the nut serving to tighten the cap to place. The preparatory heating-flame is now removed, and the heat from the burning of the gas will now be sufficientofitself to insure the continued generation of gas.

It will be observed that not only do the coils m of the tube B, which are above the burner jet or hole It, continue directly across and through the path of the flame, but also thata space, 0, is left between these coils, and through which space, also, the flame passes upward directly to the under side of the central part,f, of the cap. Thus each of the coilsis intensely heated by direct contact with the flame on both its sides as well as underneath it,'and acurrent ofatm ospheric air rises freely through the space between these adjacentcoils.

The vessel containing thearticle to be warmed is placed above the cap in any suitable manner. When the flame has reached the desired height no more air is forced in through the tube 0, and this opening is then closed. If a I decrease of heat is desired, the faucet or openand as previously stated.

ing 0 is again opened fordiminishingthe pressure in the oil-vessel. The flame will be extinguished at once when this faucet c is opened wide.

The tube system B can consist of one, two, or more coils, 0, extending from thelower part of the oil-vessel. This system B is composed of a single continuous pipe, both open ends of which are in the vessel A} Above this vessel they may be bent, so as to extend through a considerable length without occupying much space, and at about the central portion of the length of this tubeit is coiled,as above stated, into as many coils as may be desired, the coils being in planes which are nearly vertical, as shown, and the burner jet or outlet It being made on the upper side of a lowermost portion of a coil, as shown, so that the coils stand in the path of the flame and check the rapidity of the flow of the outflowing gas, while at the same time permitting the coils to be properly heated, and at the uppermost part being wound into vertical coils, with an open space between each two adjacentcoils, as shown These tubes must have a relatively great length, and must he therefore coiled to take up as little space as possible. By this arrangement the advantage ward the bottom of the oil-vessel, from which I it can be withdrawn through the filling-openings a into another vessel, in which it will form a sediment after standing sufficiently long. The petroleum clarified by this means in such vessel can then be used again. In the apparatus Fig. 1 this is done by withdrawing through the faucet w.

In my apparatus the petroleum is entirely consumed, and not in such manner that the more volatile parts escape first, but so that the remaining quantity of petroleum in the oilves sel always retains the specific gravity it had when first filled in. The flame from this apparatus produces therefore no soot. In the consumption of the petroleum no offensive smell is produced. This lamp is therefore entirely free from soot, as also smoke, and consumes the material for burning in the most economi cal manner. The flame can be instantly regulated, as desired. The apparatus can be used for heating small steam-boilers, for the heating and evaporation of fluids, as cooking apparatus, for heating of rooms, 850.

Instead of refined petroleum, ordinary gasoil, wood-oil, crude petroleum, alcohol, &c., can be used as the combustible.

I claim-- In combination with the pipe B 0, having the vertical spirals m, and having an open space, 0, between these spirals and above the burner h in the coil, the capfg i, made open at bottom and with closed flaring sides and integral with its central plate, and provided with a cen-. tral rod. 70, adapted for insertion between the coils and for securing the cap to them, as set forth.

t CARL QSTLUND. Witnesses:

F. N. STAAFT, RoB'r. M. HOOPER. 

